Gear case



Feb. 25, 1930. T. H. OPPENHEIM ET AL GEAR CASE Filed July as. 1927 2Sheets-Sheet 1 m Op benkeim Bern aroZ ,fi'ezkoral? Feb. 25, 1930. 'r. H.OPPE/NHEIM 1-:1' AL 1,743,521

GEAR CASE Filed July 28. 192'! z snooty-Sheet 2 0 1? enheim Ber-nailaezzmmt rnnoiionn Ann BERNARD I sE niroRsT; coLDwATER, onto; j I

'SIGNORS TO THE new IDEA SPREADER 00., or connwA'rnit, onro, A oonrormrron a access of dirtand other foreign matters and will be permitted tooperate in alubricant.

' Patented Feb. 25, 19 30 GEAR CASE.-

=Appli cati on filed my 23, 1927. Serial no. 2419344,.

7 This inventionvhas for its objectthe provision of a simple andefficient device whereby a train of gearing will be protected againstThe invention is dsigndprimarily use ,upon corn -husking machines tohouse the gearing connecting the upper ends of snapping rollsbut it'maybe'employed advan 1 p tageously "in other fields wherever" it isapplicable. One embodiment of the invention isillust rated intheaccompanying drawings and will be hereinafter fullyides'cribed, thenovel features being subsequently particular- 1 5 lypointed out in theappended claims; I

Q25 and 1 e Fig. 5 isa detail section on the" line 5-f5of In thedrawings, the reference numerals 1 v vention 1n the drawings:

' Figure 1 is a plan view of a gear case constructed in accordance withour present in- Fig. 21is an end view partly broken away; Fig. 3 is aVertical section taken substantially upon the line 8+3 of Fig. 1; i

i Fig. 4t is a view, partly bottom plan an I partly in section, on theline of Fig. 3,

'iand .2;respe'ctively indicate frame bars of .a g

corn-husking machine, the bar 1 being at times referred to,,forconvenience, as the up per bar and'the bar 2 being designated as thelower bar. 1 clhebars 1 and 2' are'arranged in pairsatthe sides of themachine and-converge toward their u-pper ends whichare connected bygusset plates 3fwhich extend upwardlybeyondtheframebars, as shownclearly'in Fig i -2, avery strong and rigid' vstructurel being therebyattained. The upperend of each gusso set plate is constructedwithlalateral flange and below the upper extrem tyof the upper 7' frame bars 1across bar 5 is secured to and extends betwe'ensaid bars, the crossbarbeing Z preferably in the form of an angle bar having its de endingfiangeccut away at; its ends where y it may fit to and extend. over thev edges of the gusset plates and rest upon the frame bars 1. Thesnapping rolls indicated at 6, are arranged'in pairs andare equipped115.with trunnions 7 which pass through journal boxes 8, the said'journal boxes being fitted a yoke 9' which extendsacross and rests uponthe cross bar 5, the yoke being secured in place by being bolted tojthesaid cross bar and to the flanges ofthe framelbars 1; Power isapplied tothe lower end of the inner roll of V each pair of rolls and this rollmaybe considered'as a driving rollwhile the outer roll of each pairmaybe considered as a driven roll, the journal box through which the trunmen of the driven roll passes being slidably supported in the yoke andyieldably held at f the inward limit ofitsinovement by means which arewell known to those skilled inthe art.. The trunnions of the snappingrolls are operatively' connected through trains .of geargears 14 and 15upon the respective stub shafts, one of the stub shaftshavinga gear '16which. meshes with the gear lt'up'on the I mating stub s'haft so thatthe motion will be transmitted from the driving to the driven roll whileat the same time permitting the relative sliding movement of the drivenroll. The particular pur'poseo'f the present inven tion is'to provide acase which will house the trunnions stub shafts and gearing and permitthem to be submergediin lubricant'so that vthey will operate easily andeflectuallyatlall times, the constructionof the case being such that itwill not add very materiallyl't'o-the *dead weight ofthe machine and itmaybe readily mounted upon the machine to sup portthe stub shafts'andthe idler gears carg ried therebylat a comparatively low co'st.

Inv constructing the gear case, we employ a bottom 17- which ispreferably a casting having a-flange 18 extending entirely around itsmargin and constructed adjacent its "ends with longitudinalslots 19,receiving the trunnions oft-the relatively movable rolls. The

bottom is, of course, provided with openings to accommodate thetrunnions of the drivin rolls and alsotheliends of the stublshafts 10and 11' which project therethrough. and

may be equipped with integral s0ckets .or

entirely covered flange of the cross bar 5 and bears against and extendsbetween the gusset plates 3 and suit 'able bolts are inserted throughthe bottom and the flange of the cross bar 5' as well as through theflange of the bottom'an-df'the' gusset plates to secure the bottom platerigidly in place. The bottom plate is also provided with an integralelliptical rib 21 on its inner or upper side which is disposedcoincident with the slot 19 and rising from the bottom to an extentapproximately equal to the length of the trunnion 7 which extends intothe case, as will be understood upon reference to Fig. 3. Thisconstruction amply accommodates the relative lateral movement of thetrunnion of the outersnapping roll and at the same time provides asupport for the trunnion which will counteract any tend- 'ency of thesame to bend within the gear case while in use.

Furthermore, it removes the upper or inner opening to a point within thegear case so that the. lubricant therein cannot pass out through thebottom of the case and the case may be filled to a level very nearly thesame as the highest point reached by any of the gears. It is desirableto prevent flow of lubricant to the slot 19 as the trunnion shiftstherein and exposes part of the slot and for that purpose we provide asealing plate'22 which is fitted to the upper extremity of the trunnionimmediately adjacent the hub of the gear secured thereon, and thissealing plate rests upon and slides on the upper edge of the rib and isof such extent that the space within the rib will at all times be and,consequently, the lubricant cannot escape through the rib and be lost.'Fitted close within the marginal flange 18 of the bottom 17 are side andend walls which are preferably constructed of sheet metahto reduce cost,and these side and end walls consist of a lower member 23 and an uppermember 24 each of whichis a flat plate having its ends bent at a rightangle to its greater length, the ends overlapping when the side and endwalls are placed in position and being firmly bolted together. Theseside and end wall members are of such dimensions that they will fitsnugly within the marginal flanges 18 and they are secured to the gussetplates by the same bolts which secure the said flanges to said plates.The top of the gear case consists of a lower section 25 and an uppersection 26 both of therethrough corresponding in position andarrangementto the location of the stub shafts carrying the gears 14, 15and 16 and thereby serving to retain the said shafts and their gears inoperative positions. The upper section 26 of the top is provided aroundthree edges with a flange 27 fittedabout the upper side and end walls 24so that the said section 26' may be readily placed in its proper p.osi.-tion, the flanges being slightly cut away or shortened at theirextremities to 21CC0111II10- date the flanges of the gusset plates andthe projecting ends of the lower sections 25,

as shown-in Fig. 2. 'The lower edge of the placed in the case isavoided, and to retain the parts in the proper position under cut lugsor brackets 28 are provided on the inner' side of the said section 26adjacent the lower edge thereof to engage under the upper edge of thesection 25,-also asv shown in Fig. 3. To secure the section 26 in itsposition, a rig-[ht angle bracket or projection 29 is proviC ed on thetop of the wall member 24 and a similar projection orbracket 30 isrigidly secured'to the upper side of the said top section 26, openingsbeing formed through the mating extremities of these brackets to receivea bolt 31 on which is mounted a wing nut 32 adapted to be turned homeagainst the adjacent bracket. The top section 26 is thus securelyheld-in place but it maybe easily removed-when necessary to inspect the"gearsor to replenish the supply of lubricant.

' l/Vhile the ellipticalrib 21 provided around the slot 19 serves as ameans for limiting '7 the movement of the trunnion passing therethrough,it is desirable to provide additional 'means for limiting the relativeoutward movement of sald trunnion and for that purpose we form on theunder side of the bottom 17 a lug 33 immediately adjacent the outer endof the slot 19, as shown most clearly in Fig. 4, so that when thetrunnion moves outwardly it will abut the said stop lug, the strain uponthe spring which normally holds the trunnion in its inner position beingthereby relieved andthe possibility of fracture occuring in the rib 21being reduced.

From the i'oregoing descriptlon', taken 1n connection with theaccompanying drawings,

it will be seen that we have provided a very simple gear case which willeffectually house the gearing connecting the upper ends of snappingrolls and effectually protect the same from damage'through chance blowswhile preventing the access of dirtand other foreign matter thereto andwhich gear case can be produced and applied at a low cost. The device isespeciallyadvantageous because it will permit the trains of gears to bealmost entirely submerged in lubricant.

the slot therein. 60

Upon reference to Fig-.3; will noted 7 that the highest pointion thehighest gear f 13 is only slightly above the-horizontal lane of thejoint between the upper and ower sections of the topof the case and,consequently, the case may befilled with lubricant to almost itscomplete capacity, it beingundcrstoodthat the lubricant is what is knownas a hard oil-0r grease which will not jflow like'li quidand,iconsequently, will not readily. seep or leak through the jointbetween the upper and lower sections of the side and end I Walls. Thisjoint, furthermore, maybe made practically tight by turning home thenuts on the securing bolts so'that: any leakage which may possibly occurwill be so slight as to be negligible. 'While the lubricant is beingplaced inthe' case, the upper section 26 of the top is, of course,removed thereby 20V exposing the space above the lower top "sec- Mon-25,and the lubricant is 'filled into the i case through this openspace.'After the case has been fi led withther lubricant, the section 26 is,of course, replaced and secured. K Themannerin hmh the gear caseissecured to the several elements of the supporting frame holds it veryeifectuallyin its proper place and resists vibration in a highlyelficientmanoner so that distortion of the case through use is not aptto occur and the trains of gearing will be always in proper mesh andW111 opr crate readily without binding strain.

Having thus described the invention, 'we

claim :1. The combination with a driving. 1-0- tatable element, a drivenrotatable element 7 movabl-ebodily toward and from the driving element,and a train of gears operatively connecting said elements, of acasehousing said elements and'said gears" and havlng a elementpasses,"an elliptical rib on the inner surface of the slotted side ofthe case coincident with the slot-,and'a sealing plate inner edge ofsaid rib.

slot in one side through which the driven carried by thedriven elementand extending entirely over and slidably resting on the posedbetween-the gusset plates and resting upon and secured to said cross barand bearing at its ends against and secured to the I gusset plates, sideand end walls resting on 7 said bottom and secured to the same and totheqgusset plates, a top including a lower.

section resting o-nthe upper edges of the side and end walls and theupper ends of the gussetplates and secured to thegusset plates and anupper section resting on the upper edges of the side andend walls withits lower openings above the crossbar to receive other rotatableelements whichare supportedbyi thecross bar. v p The combination with adriving rotatable element, a driven rotatable element movable bodilytoward and fromthe driv-' ing element, and a train of gears operativelyconnecting said elements, of a case housing said'elements and said gearsandhaving a slot in one side through which the driven:

elementpasses, and anelliptical rib on the inner surface of the slottedside of the case coincident with the slot.

- In testimony whereof we affix our signatures; o p THEODOREH..OPPENHEIM. a s.] BERNARD SELI-IORST. [L.S.]

* 2. The combination with a driving ro-,.

.g j'tatable element, a driven rotatable element v ing element, andatrainof gears operatively movable bodily toward and from thedrivconnecting saidelements, of a case housing said elements and saidgears and-having a g slot in one side through which the driven elementpasses, a sealing plate carried by said element within the case andcovering said" slot, and-a stop on. the outerJsurface of the g slottedside of the case at the outer" end of v n 3. ,The combination of pairsof frame gusset plates each secured to the meeting ends of the bars ofone 'pairof bars and ex-,

' V tending upwardly beyond the same,-a cross bar secureduponandextending between the upper bars of the pairs of bars, a bottomdisbars,

